D14HUGGER.ORANGE

I bought and installed a set of patriot 243 heads. I don't know the specs of them, they been slightly ported and assuming milled as well because I checked the pushrod length and it was 7.350 pushrod. Any suggestions on how much they been milled or guesses? I know patriot performance got bought out by some other company. Does anyone know about patriot performance and "stages" of there ported heads?

Here's a pic of the intake port, it's obviously been slightly Cnc ported, kinda looks half *** nothing like A.I's head work or any aftermarket head. Just curious if there like patriot stage 1 or 2 heads? Or anything about them?

D14HUGGER.ORANGE

Anyone?

PREDATOR-Z

Anyone what? How the heck are we supposed to measure by pics? Come on man, please focus and think about it.

D14HUGGER.ORANGE

Well if your read the thread predator clearly stated I dont know the specs on the heads I'm simply asking if anyone knows any information on this heads or any suggestions or guess on how much the heads been milled. I have a 7.350 length pushrod that being said, they obviously been milled. Simple question does anyone have and "suggestions or guesses?" on how they been milled? Being 7.400 length pushrod being stock length.

PREDATOR-Z

Dude, before blaming me that I'm illiterate, please explain to me how do we measure mill amount by push-rod length.
The heads should have some type of part number, perhaps Patriot keeps records on them.

LS1MCSS

iTrader: (18)

If you're using a stock head gasket, then just do the math. 7.400 - 7.350.

PREDATOR-Z

if only it could be so simple.

427zm

iTrader: (9)

OP, you need to take them to someone who can CC the chamber. Stock 243's have a 64cc chamber, so depending on how much less they are, you will know how much they've been milled. A CC of chamber is cut out with every .006 of milling. Since they've been milled, it would be a bad idea if there is enough room, to go ahead and get a "clean up" mill on the heads of .003. This will give you confidence to know they're flat and ready to go.

PREDATOR-Z

Stock 243s are 64.5cc, you can measure chamber with a syringe and a bit of vaseline.
Vaseline is to coat valve area in contact with seat (to seal and prevent fluid leaking past.).
You count the amount of fluid you had to pour through the syringe and voila instant cc-ing.

Burken01

iTrader: (88)

^^ never heard of that method but sounds badass!!